NEW DISCOVERIES : StDr Object 32 "The Joëlle's Nebula" / Sa1 / StDr16 / StDr101 / StDr160 : the Aquila planetary nebulae parade
https://astrob.in/6bblb5/0/rawthumb/hd/get.jpg?insecure
Hi everyone, it is with great emotion and great pride that I present to you today this photo which, for me, is exceptional. It's the first time we can see the Aquila region like this.
Full is here :
https://www.astrobin.com/full/6bblb5/0/
https://flic.kr/p/2nCjPVK
Starless with annotations here :
https://www.astrobin.com/full/6bblb5/C/
https://flic.kr/p/2nCkVhW
Feel free to browse the reviews on the right to see the different images with details.
And take a look to the revisions to get a starless version with annotations and more.
There is a whole super interesting text on the technical aspect of this image and my personal story but for those in a hurry, here is a quick summary:
• New discovery of a nebula of unknown nature: StDr Object 32 which will be called the name of my mother who passed away before I discovered this passion for astrophotography and is published on her birthday.
• New discovery of a planetary nebula candidate and opening of my catalog, the SAINTY’s catalog with this Sa 1 nebula.
• 16 Planetary Nebulae or canditate + Supernova Remnant in the same field.
This photo of the Eagle's outer region shows how dynamic, interesting and beautiful an area that has been rarely visited by astrophotographers can be.
This H-alpha/OIII/RGB photo was taken in 96h45 exposure time over 32 clear nights.
This exposure time allows this region to be revealed in a way never seen before by making extremely faint structures and objects visible.
In addition to the impressive dark cloud complex on the north of the photo, the numerous blood-red HII clouds in the background, or the delicate filaments of supernova remnant W50 (visible at the top of the image), the photo contains not less than 16 planetary nebulae and candidate planetary nebulae that are still awaiting confirmation by a spectrum.
The largest representatives of planetary nebulae (and candidates) in the photo are:
• Abell 56 (bottom center of image), which is probably first visible with its central OIII core.
• On the left of the image, the Strottner-Drechsler 16 candidate PN (Planetary Nebula) with a spectrum that shows all the characteristics of a PN. And with its optical resemblance to the James-Webb Space Telescope.
• On the right of the image is Strottner-Drechsler 101 (IPHASX J191003.4+032224), whose 13.5 arc minute OIII halo was discovered with this photo.
Halos around planetary nebulae are relatively rare and usually consist of H-alpha. This OIII halo is therefore very special and was a big surprise for the team.
In the center of the image, we can see the new discovery Strottner-Drechsler Object 32 / Joëlle's Nebula.
StDr Object 32 is a nebula of unknown nature, which was photographed for the very first time with this photo. StDr Objet 32 is an arc segment marked in OIII and H-alpha around a potential white dwarf. The entire structure of StDr Objet 32 has a probable diameter of about 18 arcminutes.
We don’t know the nature of this nebula right now. The team hopes to be able to elucidate the nature of this nebula soon. In any case, this photo made it possible to obtain important information on the chemical composition and the structure of this nebula.
In total, 4 objects from the team of Marcel Drechsler and Xavier Strottner are visible in this photo of this region of Aquila.
We can also see 4 objects of the American amateur astronomer Dana Patchick from Los Angeles.
Another surprise for the team of Marcel and Xavier was to discover in my photo a possible planetary nebula unknown until now on the south of the photo. This small nebula was accepted as a candidate by Pascal le Dû and officially cataloged as Sainty 1 (Sa 1).
Copyright : Marcel Drechsler - Xavier Strottner - Yann Sainty
Taken in France between May 5th and July 24th 2022
I took the liberty of posting your picture as an attachment.
Calhoun County near Blountstown, Florida.
